From 2f217f7218b621fd7d7fb7ac59b2ddf2e027ed4a Mon Sep 17 00:00:00 2001 From: Jan Hubicka Date: Sat, 11 Dec 2021 20:45:02 +0100 Subject: [PATCH] Avoid updating hot bb threshold in call speculation code This patch removes apparently forgotten debugging hack (which got in during the speculative call patchset) which reduces hot bb threshold. This does not make sense since it is set and reset randomly as the summaries are processed. One problem is that we set the BB threshold to make certain BBs hot and hten unrolling or vectorization may reduce it to some fraction of the count that makes it cold. We may want to add some buffer and divide the value by, say 32, but that shoulid be done independently of speculative calls. gcc/ChangeLog: 2021-12-11 Jan Hubicka * ipa-profile.c (ipa_profile): Do not update hot bb threshold. --- gcc/ipa-profile.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/gcc/ipa-profile.c b/gcc/ipa-profile.c index ce32b538..02f42d9 100644 --- a/gcc/ipa-profile.c +++ b/gcc/ipa-profile.c @@ -854,18 +854,6 @@ ipa_profile (void) node_map_initialized = true; ncommon++; - if (in_lto_p) - { - if (dump_file) - { - fprintf (dump_file, - "Updating hotness threshold in LTO mode.\n"); - fprintf (dump_file, "Updated min count: %" PRId64 "\n", - (int64_t) threshold / spec_count); - } - set_hot_bb_threshold (threshold / spec_count); - } - unsigned speculative_id = 0; profile_count orig = e->count; for (unsigned i = 0; i < spec_count; i++) -- 2.7.4